Yamaha 2008 Raptor 250, Service Manual

Page: 276 / 311

ELEC
7-9
EBS01045
TROUBLESHOOTING
Check:
1. fuse
2. battery
3. spark plug
4. ignition spark gap
5. ignition coil resistance
6. main switch
7. engine stop switch
8. pickup coil resistance
9. wiring connections (of the entire ignition
system)
NOTE: NOTE:
• Before troubleshooting, remove the following
part(s):
1. seat
2. front panel
3. front fender
4. rear fender
5. side cover
• Troubleshoot with the following special
tool(s).
EBS01043
EBS01044
EBS01032
The ignition system fails to operate (no
spark or intermittent spark).
1. Fuse
• Check the fuse for continuity.
Refer to “CHECKING THE SWITCHES”.
• Is the fuse OK?
YES
NO
Replace the fuse.
Ignition checker
90890-06754
Opama pet-4000 spark checker
YM-34487
Pocket tester
90890-03112
Analog pocket tester
YU-03112-C
2. Battery
• Check the condition of the battery.
Refer to “CHECKING AND CHARGING
THE BATTERY” in chapter 3.
Minimum open-circuit voltage
12.8 V or more at 20°C (68°F)
• Is the battery OK?
YES
NO
• Clean the battery
terminals.
• Recharge or replace
the battery.
3. Spark plug
• Check the condition of the spark plug.
• Check the spark plug type.
• Measure the spark plug gap.
Refer to “CHECKING THE SPARK PLUG”
in chapter 3.
Standard spark plug
DR7EA (NGK)
Spark plug gap
0.6 ~ 0.7 mm (0.024 ~ 0.028 in)
• Is the spark plug in good condition, is it of
the correct type, and is its gap within speci-
fication?
YES
NO
Re-gap or replace
the spark plug.
IGNITION SYSTEM